The material grades of boiler tubes are divided into medium and low pressure boiler tube materials and high pressure boiler tube materials.

A512 structural steel pipe is a seamless or welded steel pipe produced to specific standards and primarily used in structural applications.

ASTM A513 ERW pipe has medium strength and good weldability and is commonly used in the construction, machinery, automotive and furniture industries.

JIS G3472 Carbon steel pipes for automotive structures are used for rotor shafts, fluid lines, drive shafts, steering gears, seat belt tensioners, and airbag generator sleeves.

ASTM A53 is Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.

Low-temperature alloy pipes refer to alloy steel pipes with good mechanical properties and corrosion resistance used in low-temperature environments.